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Definition of Pine tar
1. Noun. A dark viscous substance obtained from the destructive distillation of pine wood.
Generic synonyms: Wood Tar
Medical Definition of Pine tar
1. Obtained by the destructive distillation of the wood of Pinus palustris and other species of Pinus; used internally as an expectorant, and externally in the treatment of skin diseases. Synonym: liquid pitch. (05 Mar 2000)